OMAHA, Neb. – All sorts of online campaigns have been launched to get fighters signed to the UFC, and many of them have worked.

For now, it looks like one former champion’s won’t.

“No,” White told MMAjunkie.com (www.mmajunkie.com) when asked whether Tim Sylvia could possibly be seen again inside the octagon. “I don’t even know what Tim Sylvia’s done. The last Tim Sylvia fight I saw, he got knocked out by a boxer. What has he done since then?”

Silvia (30-7) is 6-1 since the fight White referred to in which ex-boxing champ Ray Mercer knocked him out in nine seconds. Although most of his recent fights have been contested at super heavyweight, Sylvia slimmed to heavyweight and outpointed Andreas Kraniotakes this past November in the revamped ProElite.

Sylvia, who won the UFC heavyweight title on two separate occasions and defended it a total of three times, lobbied this week on Twitter and online for a chance to fight again in the promotion. He claims he could beat 80 percent of the UFC’s current heavyweights.

White does not agree with that statement, to put it mildly.

“If you look at when Tim Sylvia was in the heavyweight division, I say it all the time: It’s when we had the weakest heavyweight division in the company’s history,” he said. “Him and (Andrei) Arlovski were knocking each other out every weekend.

“I have no beef with Tim Sylvia or whatever. The guy’s out there trying to make a living and doing what he’s doing. But for him to make the claim that he could knock out 80 percent of the heavyweights in the UFC, what I just said before says it all.”

Another heavyweight that made a big splash is former NFL star Herschel Walker, who fought and won twice under the Strikeforce banner before it was purchased by UFC parent company Zuffa this past March.

Since the changeover, Walker (2-0 MMA, 2-0 SF) has been absent from the MMA scene, leading many to believe his brief flirtation with the sport is over. And when it comes to the possibility of Walker fighting in the UFC, White said it is.

“I talked to Herschel at the last Showtime (event),” White said. “You know I’m very vocal about stuff and I’ve said stuff about Herschel Walker. My thing that I used to say about Herschel Walker was like, ‘This guy is never going to win the heavyweight championship in the UFC.’

“I totally respect the guy (and) the fact that at 50 years old, or however old he is – he’s in his 50s, right? – that the guy even came out and competed in mixed martial arts. I’m 42, I can barely get on the [expletive] treadmill. So for me to talk [expletive] – the guy is a stud in what he’s been able to accomplish.

“But there’s no way he could compete in the UFC heavyweight division.”

White, who makes a point of answering as many of his nearly two million Twitter followers as possible, said those looking to get into the UFC by stalking him online need to take a different approach: Call UFC matchmaker Joe Silva.

“You’ve got to get through that little miserable guy that makes the fights,” White said. “You get through him and you get in the UFC.”